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UNITED STATES PATENT @rrrcs.

\VILLIAM ARTHUR EVANS AND JOHN HOWARD ROSS, OF DUBLIN, IRELAND, ASSIGNORS TO THE ROSS PATENT LIGHTING COMPANY, (LIMITED,) OF

SAME PLACE.

RESERVOIR-LAMP.

SPECIFICATION forming part of Letters Patent No. 387,951, dated August 14, 1888.

Application filed March 15, 1887. Serial No. 231,015.

(No model.) Patented in England February 13, 1885, No. 2,022, and May 19, in India J y 18/22, 1887, No. 111/950; in Victoria July 19, 1887, No. l85; in South Allstl'iillfl, July 22,i.-s1.

No. 842; in Queensland Julyflfi, 1887, No. 299;

in New South lVales August? 1887, No. 39; in Italy August 6,1887,XL1I, 247;

in Brazil August 11, 1887, NoAQH; in Spain November-11, 1887, No. 7,132/l1,73'3, and in Austria-Hungary December 22, 1887,

T0 aZZ whom it 11mg concern.-

Be it known that we, WILLIAM ARTHUR EVANS and JOHN HOWARD Ross, of Dublin, Ireland, have invented a new and Improved Reservoir-Lamp, (which we have partly patented in Great Britain May 19, 1887, No. 7,331, and February 13, 1885, No. 2,022; also partly patented in Spain November 11, 1887, No. 7,132/11,732; in Italy August 6, 1887, No. 247, Vol. XLII; in Austria-Hi1 ngary December 22, 1887, No. 24,910/56J45; in India July 18/22, 1887, No. 111\950 of1887; in Brazil August 11, 1887, No. 494; in Victoria July 19, 1887, N 0. 5,185; in New South Wales August 2, 1887, No. 39,- in South Australia July 22, 1887, No. 812, and in Queensland July 21, 1887, No. 299,) of which the following is a full, clear, and exact description.

Our invention relates to an improvement in reservoir-lamps, and has for its object to avoid the trouble and inconvenience arising from filling, as in ordinary lamps, and to so construct the same as that any number of lamps may be supplied with oil from a common tank for any length of time, according to the size of the tank employed, and wherein the dark shadows usually thrown beneath the light when lamps of ordinary construction are used will be to a great extent avoided, and wherein also glass chimneys are dispensed with.

The invention consists in the construction and combination of devices, as will be hereinafter fully set forth, and pointed out in the claims.

1 Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar figures of reference indicate corresponding parts in both the views.

Figure l is a horizontal section on the line 31 y of Fig. 2, illustrating a lamp, bracket, and connection with said lamp and bracket, also the oil-reservoir from which said lamp is supplied and Fig. 2 is a central longitudinal section on the line sea: of Fig. 1, illustrating in dotted lines a tank from which the reservoir is supplied.

In the construction of our illuminating apparatus an oil-reservoir, 1, is located in any convenient portion of a room or hallway and provided with a float, 2, having a central rod or wire, 3, attached thereto, the upper end of which rod or wire 3 is adapted to play in a central tubular projection, 4, integral with the cap or cover 5 of the said reservoir, while the lower end of said rod is flexibly secured to the stem of a valve, 6, entered through an aperture, 7, in the bottom of the reservoir, said valve being adapted to close in a conical seat, 8, in said bottom. The oil-reservoir may be provided with an integral collar surrounding the aperture 7, purposed to afford a connection for a supply-pipe, 9, extending from a tank, 10, situated atan elevation above said reservoir. As a finish for the reservoir a plain or ornamental casing, 11, is usually employed. Instead of the valve 6 above mentioned, an ordinary needlevalve may be located at the top of the reservoir if found more desirable.

A tubular bracket, 12, is fastened in the casing of the reservoir and connected by a pipe, 13, with a lamp, 14, two or more of which lamps may be connected in a similar manner located at various points upon the same door.

The lamps 14 are made with an outertubular casing, 15, provided at the top with a hinged or detachable burner-cap, it", having the usual flame-slot, 17, cut therein, and at the bottom to extend below the same. The said outer casing is provided with a detachable drip-cup, 18, having side apertures, 19. Near the lower edge of the outer casing, 15, and within that portion compassed by the drip-cup 18, three or more slols, 20, are cut to extend nearly around the casing, the walls between the slots being left only sufficiently wide to support the upper portion and the burner-cap. The object of the said slots will be hereinafter fully set forth.

The drip cup 18 is formed with an internal annular flange, 21, upon which the lower end of the outer casing, 15, fits. This annular flange is also purposed to receive the flanged flaring end'of a cone, 22, secured to said outer casing bysoldering the said flanged end thereto, or in any other approved manner, below the slots 20. An inner tubular casing, 23, is provided, the lower end of which is made to pass over the cone 22 to an engagement with its flanged end, and the two are firmly united. The upper end ofsaid inner casingis purposed to support a burner, 24, while an oil-chamber, 25, is formed below the burner by a horizon tal partition, 26, dividing the said casing below the center. To supply the oil-chamber 25 with fluid, a pipe, 27, is entered near the bottom, which connects upon the same level with the reservoir 1.

The outer casing, 15,within the tubular connection 13 is apertured to receive one end of a vertical pipe, 32,which,extending from thence downward between the inner and outer casings, is projected through the flange of the cone 22 and provided at its lower end with an IIJJQCiIOI nozzle, 28, at right angles thereto, within the drip-cup 18 and in alignment with the center of said cone, the injector-nozzle 28 being fitted with a needle valve, 29, to control the amount of air passing through the same, as will be hereinafter set forth.

The inner casing, 23, at a point above the cone 22 and below the partition 26, is provided Wliib'fl series of apertures, 30, arranged at intervals around the entire circumference.

Within the cellar or other convenient place an air-compressor is situated-such as a fan, meter-drum, air-pump, or bellows-and the air under pressure is conducted by pipe 31 through the tubular connection 13 and vertical pipe 32 to the injector-nozzle 28, which, having been regulated to control the required emission of air by the needle-valve 29, directs the said air under pressure up through the center of cone 22, thereby inducing currents of air from the surrounding atmosphere to enter through the apertures 19 in the drip-cup 18. These currents, together with the air under pressure from the injector-nozzle 28, thereupon pass through the apertures 30 in the inner cas- 1ng, 23, as indicated by the arrows, up between the lnner and outer casings, out through the burner-cap 16, impinging as it passes upon the flame,therebyproduoing a perfect combustion and a bright light, which casts little or no shadow beneath, a chimney not being needed. The object of the slots 20 in the outer casing is to facilitate cleaning the burner, or any trimmings of the wick or dirt which may drop into the burner can, by removing the drip-cup 18, be taken out through said slots. The flange of the drip-cup covers the slots when the lamp is in use, preventing the escape of any air, while the bottom of the cup 18 serves to retain any condensed oil-vapors that may be generated.

In illuminating a building the oil-tank may be situated at the top of the house, supplying reservoirs upon each floor, which reservoirs in turn are each made to supply the various lamps placed in the same plane therewith, the compressed air being constantly supplied as above to each lamp. The oil-tubes from the reservoirs to the various lamps may be incased by the piping conducting the air, if desired.

' In feeding the oil from the tank to the various reservoirs the liquid passing up around the valve 6 enters until the level is sufficiently high to raise the float 2, which then shuts off the supply by closing the said valve until the level of the oil is lowered by the burning of the lamps. The tube 27 conducts the oil from the reservoir to the chamber 25 of the lamp, where it rises to the same level as in the res ervoir.

We do not limit ourselves to the special form of burner shown and described, as any other arrangement of the burner proper may be adapted for use.

Having thus fully described our invention, we claim as new and desire to secure by Letters Patent- 1. The combination, with a lamp provided with a burner and burner-cap, an inner tubular casing. 23, having an oil-chamber, 25, and apertures 30 below said chamber, an apertured drip-cup, 18, and a cone, 22,within said tubu lar casing at the base, of the vertical air-pipe 32, having an injector-nozzle, 28, furnished with a needle-valve, 29, at its lower end, the tubular connections 13 and 27, the reservoir 1, and compressed-air pipe 31, substantially as shown and described, and for the purposes set forth.

2. The combination, with a lamp provided with a burner and burner-cap having an outer slotted tubular casing, 14, an inner tubular casing, 23, provided with an oil-chamber, 25, apertures 30 below said chamber, and a cone attached at the base, and the detachable apertnred drip-cup 18, of the vertical air-pipe 32, provided at its end with a valve-controlled injector-nozzle, 28, the compressedair pipe 31, and reservoir 1, together with means for connecting the oil-chamber 25 with the reservoir and the air-pipe 32 with the compressed-air pipe 31, substantially as shown and described.

3. The combination,with a burner, of a tube extending below said burner, an oil-chamber being formed in said tube, and said tube being apertured below the reservoir, an outer casing for said tube and burner, a cone in the lower end of said'tubes, an inj ector-nozzle at the base of said cone, a pipe'connecting said injectornozzle with an air-compressor, and a pipe connecting the oil-chamber with an oil-reservoir, substantially as shown and described.

. WILLIAM ARTHUR EVANS.

JOHN HOWARD ROSS.

Witnesses:

W. H. CORDUER, ARTHUR G. LAW'LOR, Both of 35 College Green, Dublin, gentlemen.

ICC 

